Ship Velocity Estimation in Airborne Along-Track Interferometric SAR Imagery Based on the Fractional Fourier Transform
Joint Authors
Huang, Kuihua
Long, Yonghong
Zhang, Linlin
Ouyang, Kewei
Chen, Chao
Li, Yan
Source
International Journal of Antennas and Propagation
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-16
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Synthetic aperture radar (SAR) was originally exploited to image stationary scenes.
However, it is important to derive target information of velocity for many applications.
The fractional Fourier transform (FrFT) is a generalization of the classical Fourier transform and is well-known as a useful tool to estimate the chirp rate of linear frequency-modulated (LFM) signals.
Motion compensation is critical to moving target imaging.
It is difficult for us to obtain the actual motion parameters in real scenarios.
Based on the moving target echo model in airborne along-track interferometric SAR (ATI-SAR) and expression of the ATI phase, a method is proposed to estimate the ship velocity by combining the ATI phase with FrFT.
First, we use the FrFT to evaluate the chirp rate of the moving target echo.
Then, we construct an equation to estimate the ship velocity using the chirp rate estimation, peak response time, and ATI phase.
Finally, the simulation experiments are used to validate the effectiveness of the proposed method.
American Psychological Association (APA)
Chen, Chao& Li, Yan& Huang, Kuihua& Long, Yonghong& Zhang, Linlin& Ouyang, Kewei. 2020. Ship Velocity Estimation in Airborne Along-Track Interferometric SAR Imagery Based on the Fractional Fourier Transform. International Journal of Antennas and Propagation،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1168896
Modern Language Association (MLA)
Chen, Chao…[et al.]. Ship Velocity Estimation in Airborne Along-Track Interferometric SAR Imagery Based on the Fractional Fourier Transform. International Journal of Antennas and Propagation No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1168896
American Medical Association (AMA)
Chen, Chao& Li, Yan& Huang, Kuihua& Long, Yonghong& Zhang, Linlin& Ouyang, Kewei. Ship Velocity Estimation in Airborne Along-Track Interferometric SAR Imagery Based on the Fractional Fourier Transform. International Journal of Antennas and Propagation. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1168896
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168896